<!DOCTYPE html>
<html>
<head>
	<title>test</title>
	<script type="text/javascript">
		function clickJS() {
			window.webkit.messageHandlers.goChat.postMessage(555555);
		}
	</script>
</head>
<body>
	<button onclick="clickJS()" style="top: 10%;left: 10%;width: 100px; height: 50px">测试按钮</button>>

</body>
</html>
